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Brightness (Lumens): 2,500 or less
https://www.benq.us/products/product_detail.cfm?product=1723&pltag=6&ptag=50
https://www.dukane.com/av/products/Item_dvProjectors.asp?Model=8111H
https://www.necdisplay.com/p/multimedia-projectors/np510ws